Interview Questions Answers in Electrical Engineering

Questions / { prabhakar }

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A resistor,inductor and capacitor are connected in series respectively.Voltage across resistor is 40v,across inductor is 70v,across capacitor is 100v.Then what is the total voltage applied across the elements?

5 Electrical Engineering 8462

Answers / { prabhakar }

Question { 28253 }

what is the higest transmission voltage and generated
voltage in india

Answer

Dear subramanyam.R U electrical engg?its not KVA its KV.

Is This Answer Correct ?

5 Yes

2 No

Question { Suzlon, 8123 }

What is reactive power?

Answer

REACTIVE POWER IS NOTHING BUT INDUCTIVE POWER OR LOSS
POWERi.

Is This Answer Correct ?

1 Yes

4 No

Question { BARC, 39133 }

what is the difference between synchronization and paralleling?

Answer

synchronization is done between two similar equipments
(generator,transformer) w.r.t FREQUENCY,KVA RATING MUST BE
SAME.

Is This Answer Correct ?

33 Yes

18 No

Question { 6290 }

Ferranti Effect says that voltage at the receiving end is
higher than that at the sending end. How is it possible?

Answer

DURING NIGHT TIMES THERE IS LIGHT LOAD,SINCE POWER
CONSUMPTION IS LOW i.e;LIGHT LOAD THE VOLTAGE AT RECEVING
END INCREASES AND HENCE IS GREATER THAN SENDING END.

Is This Answer Correct ?

2 Yes

10 No

Question { 6546 }

what is diff between Ground/Earth & Neutral?

Answer

Ground/Earth is done to allow any surge to flow into the
ground.Neutral is nothing but a return path of the circuit.

Is This Answer Correct ?

24 Yes

1 No

Question { Siemens, 6659 }

Describe the difference between a microcontroller and a
general purpose computer.

Answer

Microcontrollers are nothing but regulators based on microprocessors.Microcontrollers are used for certain predefined operations like in robotics,temperature sensor devices etc.
Computers are used to design microcontrollers.

Is This Answer Correct ?

2 Yes

3 No

Question { 5871 }

what happens when current(ac or dc)flowing through a
boucket of water?please describe it.

Answer

When ac current passes through the bucket of water due to the flow of charge the water gets heated.

Is This Answer Correct ?

1 Yes

1 No

Question { 10790 }

what is the necessity of neutral in 3 phase system?

Answer

During any disturbances,i;e during short circuit condition neutral is used to ground the surge flowing through the lines.

Is This Answer Correct ?

0 Yes

0 No

Question { 5965 }

What is bushing?

Answer

The primary function of the bushing is to provide an insulated
entrance for the conductor into the tank of the transformer.

Is This Answer Correct ?

3 Yes

2 No